Annotation of mandoc/mdoc.c, Revision 1.83
1.83 ! kristaps 1: /* $Id: mdoc.c,v 1.82 2009/06/16 19:45:51 kristaps Exp $ */
1.1 kristaps 2: /*
1.76 kristaps 3: * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
1.1 kristaps 4: *
5: * Permission to use, copy, modify, and distribute this software for any
1.75 kristaps 6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 8: *
1.75 kristaps 9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 16: */
17: #include <assert.h>
18: #include <ctype.h>
19: #include <stdarg.h>
1.73 kristaps 20: #include <stdio.h>
1.1 kristaps 21: #include <stdlib.h>
22: #include <string.h>
23:
1.70 kristaps 24: #include "libmdoc.h"
1.1 kristaps 25:
1.73 kristaps 26: enum merr {
27: ENOCALL,
28: EBODYPROL,
29: EPROLBODY,
30: ESPACE,
31: ETEXTPROL,
32: ENOBLANK,
33: EMALLOC
34: };
1.41 kristaps 35:
1.1 kristaps 36: const char *const __mdoc_macronames[MDOC_MAX] = {
1.82 kristaps 37: "Ap", "Dd", "Dt", "Os",
1.1 kristaps 38: "Sh", "Ss", "Pp", "D1",
39: "Dl", "Bd", "Ed", "Bl",
40: "El", "It", "Ad", "An",
41: "Ar", "Cd", "Cm", "Dv",
42: "Er", "Ev", "Ex", "Fa",
43: "Fd", "Fl", "Fn", "Ft",
44: "Ic", "In", "Li", "Nd",
45: "Nm", "Op", "Ot", "Pa",
46: "Rv", "St", "Va", "Vt",
47: /* LINTED */
48: "Xr", "\%A", "\%B", "\%D",
49: /* LINTED */
50: "\%I", "\%J", "\%N", "\%O",
51: /* LINTED */
52: "\%P", "\%R", "\%T", "\%V",
53: "Ac", "Ao", "Aq", "At",
54: "Bc", "Bf", "Bo", "Bq",
55: "Bsx", "Bx", "Db", "Dc",
56: "Do", "Dq", "Ec", "Ef",
57: "Em", "Eo", "Fx", "Ms",
58: "No", "Ns", "Nx", "Ox",
59: "Pc", "Pf", "Po", "Pq",
60: "Qc", "Ql", "Qo", "Qq",
61: "Re", "Rs", "Sc", "So",
62: "Sq", "Sm", "Sx", "Sy",
63: "Tn", "Ux", "Xc", "Xo",
64: "Fo", "Fc", "Oo", "Oc",
65: "Bk", "Ek", "Bt", "Hf",
1.82 kristaps 66: "Fr", "Ud", "Lb", "Lp",
67: "Lk", "Mt", "Brq", "Bro",
1.64 kristaps 68: /* LINTED */
1.82 kristaps 69: "Brc", "\%C", "Es", "En",
1.69 kristaps 70: /* LINTED */
1.82 kristaps 71: "Dx", "\%Q"
1.1 kristaps 72: };
73:
74: const char *const __mdoc_argnames[MDOC_ARG_MAX] = {
75: "split", "nosplit", "ragged",
76: "unfilled", "literal", "file",
77: "offset", "bullet", "dash",
78: "hyphen", "item", "enum",
79: "tag", "diag", "hang",
80: "ohang", "inset", "column",
81: "width", "compact", "std",
1.52 kristaps 82: "filled", "words", "emphasis",
1.64 kristaps 83: "symbolic", "nested"
1.1 kristaps 84: };
85:
86: const char * const *mdoc_macronames = __mdoc_macronames;
87: const char * const *mdoc_argnames = __mdoc_argnames;
88:
1.73 kristaps 89: static void mdoc_free1(struct mdoc *);
90: static int mdoc_alloc1(struct mdoc *);
91: static struct mdoc_node *node_alloc(struct mdoc *, int, int,
92: int, enum mdoc_type);
93: static int node_append(struct mdoc *,
1.71 kristaps 94: struct mdoc_node *);
95: static int parsetext(struct mdoc *, int, char *);
96: static int parsemacro(struct mdoc *, int, char *);
97: static int macrowarn(struct mdoc *, int, const char *);
1.73 kristaps 98: static int perr(struct mdoc *, int, int, enum merr);
1.71 kristaps 99:
1.73 kristaps 100: #define verr(m, t) perr((m), (m)->last->line, (m)->last->pos, (t))
1.45 kristaps 101:
1.1 kristaps 102: const struct mdoc_node *
1.71 kristaps 103: mdoc_node(const struct mdoc *m)
1.1 kristaps 104: {
105:
1.71 kristaps 106: return(MDOC_HALT & m->flags ? NULL : m->first);
1.1 kristaps 107: }
108:
109:
1.37 kristaps 110: const struct mdoc_meta *
1.71 kristaps 111: mdoc_meta(const struct mdoc *m)
1.37 kristaps 112: {
113:
1.71 kristaps 114: return(MDOC_HALT & m->flags ? NULL : &m->meta);
1.37 kristaps 115: }
116:
117:
1.73 kristaps 118: static void
119: mdoc_free1(struct mdoc *mdoc)
1.67 kristaps 120: {
121:
122: if (mdoc->first)
123: mdoc_node_freelist(mdoc->first);
124: if (mdoc->meta.title)
125: free(mdoc->meta.title);
126: if (mdoc->meta.os)
127: free(mdoc->meta.os);
128: if (mdoc->meta.name)
129: free(mdoc->meta.name);
130: if (mdoc->meta.arch)
131: free(mdoc->meta.arch);
132: if (mdoc->meta.vol)
133: free(mdoc->meta.vol);
1.73 kristaps 134: }
135:
136:
137: static int
138: mdoc_alloc1(struct mdoc *mdoc)
139: {
1.67 kristaps 140:
141: bzero(&mdoc->meta, sizeof(struct mdoc_meta));
142: mdoc->flags = 0;
143: mdoc->lastnamed = mdoc->lastsec = 0;
1.70 kristaps 144: mdoc->last = calloc(1, sizeof(struct mdoc_node));
145: if (NULL == mdoc->last)
1.73 kristaps 146: return(0);
147:
1.70 kristaps 148: mdoc->first = mdoc->last;
1.67 kristaps 149: mdoc->last->type = MDOC_ROOT;
150: mdoc->next = MDOC_NEXT_CHILD;
1.73 kristaps 151: return(1);
152: }
153:
154:
155: /*
156: * Free up all resources contributed by a parse: the node tree,
157: * meta-data and so on. Then reallocate the root node for another
158: * parse.
159: */
160: int
161: mdoc_reset(struct mdoc *mdoc)
162: {
163:
164: mdoc_free1(mdoc);
165: return(mdoc_alloc1(mdoc));
1.67 kristaps 166: }
167:
168:
1.68 kristaps 169: /*
170: * Completely free up all resources.
171: */
1.67 kristaps 172: void
1.38 kristaps 173: mdoc_free(struct mdoc *mdoc)
1.34 kristaps 174: {
175:
1.73 kristaps 176: mdoc_free1(mdoc);
1.68 kristaps 177: if (mdoc->htab)
1.74 kristaps 178: mdoc_hash_free(mdoc->htab);
1.1 kristaps 179: free(mdoc);
180: }
181:
182:
183: struct mdoc *
1.55 kristaps 184: mdoc_alloc(void *data, int pflags, const struct mdoc_cb *cb)
1.1 kristaps 185: {
186: struct mdoc *p;
187:
1.70 kristaps 188: if (NULL == (p = calloc(1, sizeof(struct mdoc))))
1.73 kristaps 189: return(NULL);
1.74 kristaps 190: if (cb)
191: (void)memcpy(&p->cb, cb, sizeof(struct mdoc_cb));
1.1 kristaps 192:
193: p->data = data;
1.73 kristaps 194: p->pflags = pflags;
195:
1.74 kristaps 196: if (NULL == (p->htab = mdoc_hash_alloc())) {
197: free(p);
198: return(NULL);
199: } else if (mdoc_alloc1(p))
200: return(p);
1.1 kristaps 201:
1.73 kristaps 202: free(p);
203: return(NULL);
1.1 kristaps 204: }
205:
206:
1.68 kristaps 207: /*
208: * Climb back up the parse tree, validating open scopes. Mostly calls
209: * through to macro_end in macro.c.
210: */
1.1 kristaps 211: int
1.72 kristaps 212: mdoc_endparse(struct mdoc *m)
1.20 kristaps 213: {
214:
1.72 kristaps 215: if (MDOC_HALT & m->flags)
1.20 kristaps 216: return(0);
1.72 kristaps 217: else if (mdoc_macroend(m))
1.20 kristaps 218: return(1);
1.72 kristaps 219: m->flags |= MDOC_HALT;
220: return(0);
1.20 kristaps 221: }
222:
223:
1.50 kristaps 224: /*
1.53 kristaps 225: * Main parse routine. Parses a single line -- really just hands off to
226: * the macro or text parser.
1.50 kristaps 227: */
1.20 kristaps 228: int
1.53 kristaps 229: mdoc_parseln(struct mdoc *m, int ln, char *buf)
1.1 kristaps 230: {
231:
1.53 kristaps 232: /* If in error-mode, then we parse no more. */
1.50 kristaps 233:
1.53 kristaps 234: if (MDOC_HALT & m->flags)
1.20 kristaps 235: return(0);
1.50 kristaps 236:
1.53 kristaps 237: return('.' == *buf ? parsemacro(m, ln, buf) :
238: parsetext(m, ln, buf));
1.1 kristaps 239: }
240:
241:
242: int
1.31 kristaps 243: mdoc_verr(struct mdoc *mdoc, int ln, int pos,
244: const char *fmt, ...)
1.1 kristaps 245: {
1.31 kristaps 246: char buf[256];
247: va_list ap;
1.1 kristaps 248:
249: if (NULL == mdoc->cb.mdoc_err)
250: return(0);
1.31 kristaps 251:
252: va_start(ap, fmt);
253: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
254: va_end(ap);
255: return((*mdoc->cb.mdoc_err)(mdoc->data, ln, pos, buf));
1.1 kristaps 256: }
257:
258:
259: int
1.31 kristaps 260: mdoc_vwarn(struct mdoc *mdoc, int ln, int pos,
261: enum mdoc_warn type, const char *fmt, ...)
1.1 kristaps 262: {
1.31 kristaps 263: char buf[256];
264: va_list ap;
1.1 kristaps 265:
266: if (NULL == mdoc->cb.mdoc_warn)
267: return(0);
1.31 kristaps 268:
269: va_start(ap, fmt);
270: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
271: va_end(ap);
272: return((*mdoc->cb.mdoc_warn)(mdoc->data, ln, pos, type, buf));
1.1 kristaps 273: }
274:
275:
276: int
1.78 kristaps 277: mdoc_nerr(struct mdoc *mdoc, const struct mdoc_node *node, const char *fmt, ...)
278: {
279: char buf[256];
280: va_list ap;
281:
282: if (NULL == mdoc->cb.mdoc_err)
283: return(0);
284:
285: va_start(ap, fmt);
286: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
287: va_end(ap);
288: return((*mdoc->cb.mdoc_err)(mdoc->data, node->line, node->pos, buf));
289: }
290:
291:
292: int
293: mdoc_warn(struct mdoc *mdoc, enum mdoc_warn type, const char *fmt, ...)
294: {
295: char buf[256];
296: va_list ap;
297:
298: if (NULL == mdoc->cb.mdoc_warn)
299: return(0);
300:
301: va_start(ap, fmt);
302: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
303: va_end(ap);
304: return((*mdoc->cb.mdoc_warn)(mdoc->data, mdoc->last->line,
305: mdoc->last->pos, type, buf));
306: }
307:
308:
309: int
310: mdoc_err(struct mdoc *mdoc, const char *fmt, ...)
311: {
312: char buf[256];
313: va_list ap;
314:
315: if (NULL == mdoc->cb.mdoc_err)
316: return(0);
317:
318: va_start(ap, fmt);
319: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
320: va_end(ap);
321: return((*mdoc->cb.mdoc_err)(mdoc->data, mdoc->last->line,
322: mdoc->last->pos, buf));
323: }
324:
325:
326: int
327: mdoc_pwarn(struct mdoc *mdoc, int line, int pos, enum mdoc_warn type,
328: const char *fmt, ...)
329: {
330: char buf[256];
331: va_list ap;
332:
333: if (NULL == mdoc->cb.mdoc_warn)
334: return(0);
335:
336: va_start(ap, fmt);
337: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
338: va_end(ap);
339: return((*mdoc->cb.mdoc_warn)(mdoc->data, line, pos, type, buf));
340: }
341:
342: int
343: mdoc_perr(struct mdoc *mdoc, int line, int pos, const char *fmt, ...)
344: {
345: char buf[256];
346: va_list ap;
347:
348: if (NULL == mdoc->cb.mdoc_err)
349: return(0);
350:
351: va_start(ap, fmt);
352: (void)vsnprintf(buf, sizeof(buf) - 1, fmt, ap);
353: va_end(ap);
354: return((*mdoc->cb.mdoc_err)(mdoc->data, line, pos, buf));
355: }
356:
357:
358: int
1.53 kristaps 359: mdoc_macro(struct mdoc *m, int tok,
360: int ln, int pp, int *pos, char *buf)
1.1 kristaps 361: {
362:
1.53 kristaps 363: /* FIXME - these should happen during validation. */
1.31 kristaps 364:
1.44 kristaps 365: if (MDOC_PROLOGUE & mdoc_macros[tok].flags &&
1.53 kristaps 366: SEC_PROLOGUE != m->lastnamed)
1.73 kristaps 367: return(perr(m, ln, pp, EPROLBODY));
1.53 kristaps 368:
1.44 kristaps 369: if ( ! (MDOC_PROLOGUE & mdoc_macros[tok].flags) &&
1.53 kristaps 370: SEC_PROLOGUE == m->lastnamed)
1.73 kristaps 371: return(perr(m, ln, pp, EBODYPROL));
1.53 kristaps 372:
373: if (1 != pp && ! (MDOC_CALLABLE & mdoc_macros[tok].flags))
1.73 kristaps 374: return(perr(m, ln, pp, ENOCALL));
1.53 kristaps 375:
376: return((*mdoc_macros[tok].fp)(m, tok, ln, pp, pos, buf));
1.1 kristaps 377: }
378:
379:
1.23 kristaps 380: static int
1.73 kristaps 381: perr(struct mdoc *m, int line, int pos, enum merr type)
382: {
383: char *p;
384:
385: p = NULL;
386: switch (type) {
387: case (ENOCALL):
388: p = "not callable";
389: break;
390: case (EPROLBODY):
391: p = "macro disallowed in document body";
392: break;
393: case (EBODYPROL):
394: p = "macro disallowed in document prologue";
395: break;
396: case (EMALLOC):
397: p = "memory exhausted";
398: break;
399: case (ETEXTPROL):
400: p = "text disallowed in document prologue";
401: break;
402: case (ENOBLANK):
403: p = "blank lines disallowed in non-literal contexts";
404: break;
405: case (ESPACE):
406: p = "whitespace disallowed after delimiter";
407: break;
408: }
409: assert(p);
410: return(mdoc_perr(m, line, pos, p));
411: }
412:
413:
414: static int
415: node_append(struct mdoc *mdoc, struct mdoc_node *p)
1.1 kristaps 416: {
417:
1.25 kristaps 418: assert(mdoc->last);
419: assert(mdoc->first);
420: assert(MDOC_ROOT != p->type);
1.1 kristaps 421:
1.13 kristaps 422: switch (mdoc->next) {
423: case (MDOC_NEXT_SIBLING):
1.6 kristaps 424: mdoc->last->next = p;
425: p->prev = mdoc->last;
1.13 kristaps 426: p->parent = mdoc->last->parent;
1.1 kristaps 427: break;
1.13 kristaps 428: case (MDOC_NEXT_CHILD):
429: mdoc->last->child = p;
1.1 kristaps 430: p->parent = mdoc->last;
431: break;
432: default:
1.13 kristaps 433: abort();
434: /* NOTREACHED */
1.1 kristaps 435: }
436:
1.23 kristaps 437: if ( ! mdoc_valid_pre(mdoc, p))
438: return(0);
1.68 kristaps 439: if ( ! mdoc_action_pre(mdoc, p))
440: return(0);
1.27 kristaps 441:
442: switch (p->type) {
443: case (MDOC_HEAD):
444: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 445: p->parent->head = p;
1.27 kristaps 446: break;
447: case (MDOC_TAIL):
448: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 449: p->parent->tail = p;
1.27 kristaps 450: break;
451: case (MDOC_BODY):
452: assert(MDOC_BLOCK == p->parent->type);
1.53 kristaps 453: p->parent->body = p;
1.27 kristaps 454: break;
455: default:
456: break;
457: }
458:
1.1 kristaps 459: mdoc->last = p;
1.71 kristaps 460:
461: switch (p->type) {
462: case (MDOC_TEXT):
463: if ( ! mdoc_valid_post(mdoc))
464: return(0);
465: if ( ! mdoc_action_post(mdoc))
466: return(0);
467: break;
468: default:
469: break;
470: }
471:
1.23 kristaps 472: return(1);
1.1 kristaps 473: }
474:
475:
1.45 kristaps 476: static struct mdoc_node *
1.73 kristaps 477: node_alloc(struct mdoc *mdoc, int line,
478: int pos, int tok, enum mdoc_type type)
1.45 kristaps 479: {
1.46 kristaps 480: struct mdoc_node *p;
481:
1.73 kristaps 482: if (NULL == (p = calloc(1, sizeof(struct mdoc_node)))) {
483: (void)verr(mdoc, EMALLOC);
484: return(NULL);
485: }
486:
1.46 kristaps 487: p->sec = mdoc->lastsec;
1.73 kristaps 488: p->line = line;
489: p->pos = pos;
490: p->tok = tok;
491: if (MDOC_TEXT != (p->type = type))
492: assert(p->tok >= 0);
1.45 kristaps 493:
1.46 kristaps 494: return(p);
1.45 kristaps 495: }
496:
497:
1.23 kristaps 498: int
1.22 kristaps 499: mdoc_tail_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.17 kristaps 500: {
501: struct mdoc_node *p;
502:
1.73 kristaps 503: p = node_alloc(mdoc, line, pos, tok, MDOC_TAIL);
504: if (NULL == p)
505: return(0);
506: return(node_append(mdoc, p));
1.17 kristaps 507: }
508:
509:
1.23 kristaps 510: int
1.22 kristaps 511: mdoc_head_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1 kristaps 512: {
513: struct mdoc_node *p;
514:
515: assert(mdoc->first);
516: assert(mdoc->last);
517:
1.73 kristaps 518: p = node_alloc(mdoc, line, pos, tok, MDOC_HEAD);
519: if (NULL == p)
520: return(0);
521: return(node_append(mdoc, p));
1.1 kristaps 522: }
523:
524:
1.23 kristaps 525: int
1.22 kristaps 526: mdoc_body_alloc(struct mdoc *mdoc, int line, int pos, int tok)
1.1 kristaps 527: {
528: struct mdoc_node *p;
529:
1.73 kristaps 530: p = node_alloc(mdoc, line, pos, tok, MDOC_BODY);
531: if (NULL == p)
532: return(0);
533: return(node_append(mdoc, p));
1.1 kristaps 534: }
535:
536:
1.23 kristaps 537: int
1.22 kristaps 538: mdoc_block_alloc(struct mdoc *mdoc, int line, int pos,
1.53 kristaps 539: int tok, struct mdoc_arg *args)
1.1 kristaps 540: {
541: struct mdoc_node *p;
542:
1.73 kristaps 543: p = node_alloc(mdoc, line, pos, tok, MDOC_BLOCK);
544: if (NULL == p)
545: return(0);
1.77 kristaps 546: p->args = args;
547: if (p->args)
1.53 kristaps 548: (args->refcnt)++;
1.73 kristaps 549: return(node_append(mdoc, p));
1.1 kristaps 550: }
551:
552:
1.23 kristaps 553: int
1.22 kristaps 554: mdoc_elem_alloc(struct mdoc *mdoc, int line, int pos,
1.53 kristaps 555: int tok, struct mdoc_arg *args)
1.1 kristaps 556: {
557: struct mdoc_node *p;
558:
1.73 kristaps 559: p = node_alloc(mdoc, line, pos, tok, MDOC_ELEM);
560: if (NULL == p)
561: return(0);
1.77 kristaps 562: p->args = args;
563: if (p->args)
1.53 kristaps 564: (args->refcnt)++;
1.73 kristaps 565: return(node_append(mdoc, p));
1.1 kristaps 566: }
567:
568:
1.23 kristaps 569: int
1.22 kristaps 570: mdoc_word_alloc(struct mdoc *mdoc,
571: int line, int pos, const char *word)
1.1 kristaps 572: {
573: struct mdoc_node *p;
574:
1.73 kristaps 575: p = node_alloc(mdoc, line, pos, -1, MDOC_TEXT);
576: if (NULL == p)
577: return(0);
578: if (NULL == (p->string = strdup(word))) {
579: (void)verr(mdoc, EMALLOC);
580: return(0);
581: }
582: return(node_append(mdoc, p));
1.1 kristaps 583: }
584:
585:
1.53 kristaps 586: void
587: mdoc_node_free(struct mdoc_node *p)
1.1 kristaps 588: {
589:
1.53 kristaps 590: if (p->string)
591: free(p->string);
592: if (p->args)
593: mdoc_argv_free(p->args);
1.1 kristaps 594: free(p);
595: }
596:
597:
1.53 kristaps 598: void
599: mdoc_node_freelist(struct mdoc_node *p)
1.1 kristaps 600: {
601:
1.53 kristaps 602: if (p->child)
603: mdoc_node_freelist(p->child);
604: if (p->next)
605: mdoc_node_freelist(p->next);
1.1 kristaps 606:
1.53 kristaps 607: mdoc_node_free(p);
1.1 kristaps 608: }
609:
610:
1.53 kristaps 611: /*
612: * Parse free-form text, that is, a line that does not begin with the
613: * control character.
614: */
615: static int
1.68 kristaps 616: parsetext(struct mdoc *m, int line, char *buf)
1.1 kristaps 617: {
618:
1.68 kristaps 619: if (SEC_PROLOGUE == m->lastnamed)
1.73 kristaps 620: return(perr(m, line, 0, ETEXTPROL));
1.1 kristaps 621:
1.68 kristaps 622: if (0 == buf[0] && ! (MDOC_LITERAL & m->flags))
1.73 kristaps 623: return(perr(m, line, 0, ENOBLANK));
1.68 kristaps 624:
625: if ( ! mdoc_word_alloc(m, line, 0, buf))
1.53 kristaps 626: return(0);
1.1 kristaps 627:
1.68 kristaps 628: m->next = MDOC_NEXT_SIBLING;
1.53 kristaps 629: return(1);
1.1 kristaps 630: }
631:
632:
1.58 kristaps 633: static int
634: macrowarn(struct mdoc *m, int ln, const char *buf)
635: {
636: if ( ! (MDOC_IGN_MACRO & m->pflags))
1.73 kristaps 637: return(mdoc_perr(m, ln, 1,
638: "unknown macro: %s%s",
1.59 kristaps 639: buf, strlen(buf) > 3 ? "..." : ""));
1.58 kristaps 640: return(mdoc_pwarn(m, ln, 1, WARN_SYNTAX,
641: "unknown macro: %s%s",
1.59 kristaps 642: buf, strlen(buf) > 3 ? "..." : ""));
1.58 kristaps 643: }
644:
645:
1.53 kristaps 646: /*
647: * Parse a macro line, that is, a line beginning with the control
648: * character.
649: */
650: int
651: parsemacro(struct mdoc *m, int ln, char *buf)
1.1 kristaps 652: {
1.53 kristaps 653: int i, c;
654: char mac[5];
1.1 kristaps 655:
1.81 kristaps 656: /* Empty lines are ignored. */
1.63 kristaps 657:
658: if (0 == buf[1])
659: return(1);
660:
1.65 kristaps 661: if (' ' == buf[1]) {
1.63 kristaps 662: i = 2;
1.65 kristaps 663: while (buf[i] && ' ' == buf[i])
1.63 kristaps 664: i++;
665: if (0 == buf[i])
666: return(1);
1.73 kristaps 667: return(perr(m, ln, 1, ESPACE));
1.63 kristaps 668: }
1.1 kristaps 669:
1.53 kristaps 670: /* Copy the first word into a nil-terminated buffer. */
1.1 kristaps 671:
1.53 kristaps 672: for (i = 1; i < 5; i++) {
673: if (0 == (mac[i - 1] = buf[i]))
674: break;
1.65 kristaps 675: else if (' ' == buf[i])
1.53 kristaps 676: break;
677: }
1.1 kristaps 678:
1.53 kristaps 679: mac[i - 1] = 0;
1.1 kristaps 680:
1.53 kristaps 681: if (i == 5 || i <= 2) {
1.58 kristaps 682: if ( ! macrowarn(m, ln, mac))
683: goto err;
684: return(1);
1.53 kristaps 685: }
686:
1.74 kristaps 687: if (MDOC_MAX == (c = mdoc_hash_find(m->htab, mac))) {
1.58 kristaps 688: if ( ! macrowarn(m, ln, mac))
689: goto err;
690: return(1);
1.53 kristaps 691: }
1.1 kristaps 692:
1.53 kristaps 693: /* The macro is sane. Jump to the next word. */
1.1 kristaps 694:
1.65 kristaps 695: while (buf[i] && ' ' == buf[i])
1.53 kristaps 696: i++;
1.1 kristaps 697:
1.53 kristaps 698: /* Begin recursive parse sequence. */
1.1 kristaps 699:
1.53 kristaps 700: if ( ! mdoc_macro(m, c, ln, 1, &i, buf))
701: goto err;
1.1 kristaps 702:
1.53 kristaps 703: return(1);
1.1 kristaps 704:
1.53 kristaps 705: err: /* Error out. */
1.1 kristaps 706:
1.53 kristaps 707: m->flags |= MDOC_HALT;
708: return(0);
1.1 kristaps 709: }
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